package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;

import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author xmy
 * @version 1.0
 */
@Service
public class ReportServiceImpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WorkspaceService workspaceService;
    /**
     * 获取营业额
     * @param begin
     * @param end
     * @return
     */
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {

        //当前集合用于存放从begin到end范围内的每天的日期
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        //存放每天的营业额；
        List<Double> turnoverList=new ArrayList<>();
        for (LocalDate localDate : dateList) {
            //查询对应日期的营业额（状态为已完成的订单）
            LocalDateTime beginTime=LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(localDate, LocalTime.MAX);
            Map map=new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover=orderMapper.sumByMap(map);
            turnover=turnover==null?0.0:turnover;
            turnoverList.add(turnover);

        }
        return TurnoverReportVO
                .builder().dateList( StringUtils.join(dateList,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    /**
     * 获取用户信息
     * @param begin
     * @param end
     * @return
     */
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        //当前集合用于存放从begin到end范围内的每天的日期
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        //存放每天的新增用户数量
        List<Integer> newUserList=new ArrayList<>();
        //存放所有用户量
        List<Integer> totalUserList=new ArrayList<>();

        for (LocalDate localDate : dateList) {
            //查询对应日期的营业额（状态为已完成的订单）
            LocalDateTime beginTime=LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(localDate, LocalTime.MAX);
            Map map=new HashMap();

            map.put("end",endTime);
            Integer totalUser=userMapper.countByMap(map);
            map.put("begin",beginTime);
            Integer newUser=userMapper.countByMap(map);
            totalUserList.add(totalUser);
            newUserList.add(newUser);

        }
        return UserReportVO
                .builder().totalUserList( StringUtils.join(totalUserList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .dateList(StringUtils.join(dateList,","))
                .build();
    }

    /**
     * 订单数据统计
     * @param begin
     * @param end
     * @return
     */
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        Integer totalOrderCount=orderMapper.count(begin,end,null);
        Integer validOrderCount=orderMapper.count(begin,end,Orders.COMPLETED);
        //当前集合用于存放从begin到end范围内的每天的日期
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }


        List<Integer> orderCountList=new ArrayList<>();
        List<Integer> validOrderCountList=new ArrayList<>();

        for (LocalDate localDate : dateList) {
            //查询对应日期的营业额（状态为已完成的订单）
            LocalDateTime beginTime=LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(localDate, LocalTime.MAX);
            Map map=new HashMap();
            Map mapp=new HashMap();
            map.put("end",endTime);
            map.put("begin",beginTime);
            map.put("status",Orders.COMPLETED);
            Integer validOrder=orderMapper.countByMap(map);
            mapp.put("end",endTime);
            mapp.put("begin",beginTime);
            mapp.put("status",null);
            Integer orderCount=orderMapper.countByMap(mapp);
            orderCountList.add(orderCount);
            validOrderCountList.add(validOrder);

        }

        Double orderCompletionRate=(double)validOrderCount/totalOrderCount;

        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCompletionRate(orderCompletionRate)
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .build();

    }

    /**
     * 销量排名
     * @param begin
     * @param end
     * @return
     */
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {


        LocalDateTime beginTime=LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime=LocalDateTime.of(end, LocalTime.MAX);
        List<GoodsSalesDTO> salesDTOS=orderMapper.getSalesTop10(beginTime,endTime);
        List<String> names=salesDTOS.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        List<Integer> numbers=salesDTOS.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());
        return SalesTop10ReportVO.builder()
                .nameList(StringUtils.join(names,","))
                .numberList(StringUtils.join(numbers,","))
                .build();
    }

    /**
     * 导出运营数据报表
     * @param httpServletResponse
     */
    public void exportBusinessDate(HttpServletResponse httpServletResponse) {
        //查询数据库，获取营业数据最近30天的数据；
        LocalDate dateBegin=LocalDate.now().minusDays(30);
        LocalDate dateEnd=LocalDate.now().minusDays(1);

        BusinessDataVO businessDataVO =workspaceService.getBusinessData(LocalDateTime.of(dateBegin,LocalTime.MIN),LocalDateTime.of(dateEnd,LocalTime.MAX));

        //将数据导入excel
        InputStream in=this.getClass().getClassLoader().getResourceAsStream("template1/运营数据报表模板.xlsx");
        try {
            XSSFWorkbook excel=new XSSFWorkbook(in);
            XSSFSheet sheet=excel.getSheet("sheet1");
            //填充时间
            sheet.getRow(1).getCell(1).setCellValue("时间："+dateBegin+"至"+dateEnd);
            //获得第四行
            XSSFRow row=sheet.getRow(3);
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());
            //获得第五行
            row=sheet.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());//第三个单元格
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            //填充明细数据
            for (int i=0;i<30;i++){
                LocalDate date=dateBegin.plusDays(i);
                //查询某一天的数据
                BusinessDataVO businessDataVO1=workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN),LocalDateTime.of(date,LocalTime.MAX));
                //获得某一行
                row=sheet.getRow(7+i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessDataVO1.getTurnover());
                row.getCell(3).setCellValue(businessDataVO1.getValidOrderCount());
                row.getCell(4).setCellValue(businessDataVO1.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessDataVO1.getUnitPrice());
                row.getCell(6).setCellValue(businessDataVO1.getNewUsers());
            }
            //通过输出流将excel文件下载到客户端浏览器
            ServletOutputStream out=httpServletResponse.getOutputStream();
            excel.write(out);
            out.close();
            excel.close();

        }catch (IOException E){
            E.printStackTrace();
        }


    }
}
